#include "applib/lib_syscall.h"
#include <stdio.h>
#include "main.h"
#include <stdlib.h>
#include "string.h"
#include <getopt.h>     // 非标准c库函数，而是Newlib库
#include <sys/file.h>
#include "fs/file.h"
#include "dev/tty.h"

int main(int argc, char ** argv)
{
    int a = 3 / 0;
    *(char *)0 = 1234;
    return 0;
}